code: def exe_cmd(self):
      return "CUDA_VISIBLE_DEVICES={gpuid} python3 {executive}".format(
          executive=self.executive, gpuid=self.gpuid
      )
  
imports: from subprocess import Popen, PIPE
  from threading import Thread, Lock
  from queue import Queue
  from time import sleep
  from sys import stderr
  import re
  import json
label_desc: Use image node_id 6 for calling the RemoteController obj's underlying member method code with example usage: obj.exe_cmd() and returns: str